BMC 685

Category: Polyester, TS , Thermoset Polyester
Manufacturer: Bulk Molding Compounds, Inc.
Trademark: BMC
Fillers: -
Ports: Qinzhou, Shekou, Shanghai, Ningbo
Delivery Terms FOB, CIF, DAP, DAT, DDP
PDF: UeXsyq_BMC-685.pdf
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BMC 685 molding compound is a mineral filled, glass fiber reinforced polyester compound suitable for compression, transfer and stuffer injection molding. It is characterized by good moldability, oil and solvent resistance and creep resistance at elevated temperatures. Typical applications include replacements for die castings and sheet molding compounds, valve covers, intake manifolds, oil pans and circuit breakers.

BMC 685 molding compound is produced in extruded form in a range of industrial colors. It is available in logs up to 12 inches in length or as precut slugs, of specific weight, in diameters 1 in to 2.5 in. Within this range, smaller diameters are supplied as multiple extrusions and weight tolerances are plus or minus 5 %, up to a maximum of plus or minus 15 grams.
General Information
Filler / Reinforcement
  • Glass\Mineral
Features
  • Good Creep Resistance
  • Good Moldability
  • Oil Resistant
  • Solvent Resistant
Uses
  • Automotive Applications
  • Automotive Under the Hood
Appearance
  • Colors Available
Forms
  • BMC - Bulk Molding Compound
Processing Method
  • Compression Molding
  • Injection Molding
  • Resin Transfer Molding
PhysicalNominal ValueUnitTest Method
Specific Gravity 1.75g/cm³ASTM D792
Molding Shrinkage - Flow 0.15 to 0.25%ASTM D955
Water Absorption (23°C, 24 hr)0.11%ASTM D570
HardnessNominal ValueUnitTest Method
Barcol Hardness 60ASTM D2583
MechanicalNominal ValueUnitTest Method
Tensile Strength 72.4MPaASTM D638
Flexural Strength 197MPaASTM D790
Compressive Strength 197MPaASTM D695
ImpactNominal ValueUnitTest Method
Notched Izod Impact 880J/mASTM D256
ThermalNominal ValueUnitTest Method
Deflection Temperature Under Load (1.8 MPa, Unannealed)260°CASTM D648
ElectricalNominal ValueUnitTest Method
Dielectric Strength 116kV/mmASTM D149
Arc Resistance 190secASTM D495
Comparative Tracking Index (CTI) 500VUL 746
FlammabilityNominal ValueUnitTest Method
Flame Rating UL 94
    1.59 mm HB
    3.18 mm V-0
    6.35 mm V-0
Note Message
1 .Method A (Short-Time)
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